package com.kuang.dao;

import com.kuang.pojo.Department;
import com.kuang.pojo.Employee;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
//员工Dao
@Repository
public class EmployeeDao {
    //模拟数据库中的数据
    private static Map<Integer, Employee> employees=null;
    //员工有所属的部门
    @Autowired
    private DepartmentDao departmentDao;
    static {
        employees=new HashMap<Integer,Employee>();

        employees.put(1001,new Employee(1001,"AA","A2484966212@qq.com",0,new Department(101,"教学部")));
        employees.put(1002,new Employee(1002,"BB","B2484966212@qq.com",1,new Department(102,"市场部")));
        employees.put(1003,new Employee(1003,"CC","C2484966212@qq.com",0,new Department(103,"教研部")));
        employees.put(1004,new Employee(1004,"DD","D2484966212@qq.com",1,new Department(104,"运营部")));
        employees.put(1005,new Employee(1005,"EE","E2484966212@qq.com",0,new Department(105,"后勤部")));
    }
    //主键自增
    private static Integer initId=1006;

    //增加一个员工
    //输入一个对象，如果他的id为空就添加，如果不为空就go on
    public void save(Employee employee){
        if (employee.getId()==null){
            employee.setId(initId++);
        }
        //调用传来的员工对象，员工->部门对象->部门id->部门对象->设置部门
        employee.setDepartment(departmentDao.getDepartmentById(employee.getDepartment().getId()));;

        //将员工放入员工hashmap里面
        employees.put(employee.getId(),employee);

    }
    //查询全部员工信息
    //直接返回员工hashmap的所有employee值
    public Collection<Employee> getAll(){
            return employees.values();
    }
    //通过id查询员工
    //直接通过员工hashmap，利用键值对返回值employee
    public Employee getEmployeeById(Integer id ){
        return employees.get(id);
    }

    //删除员工通过id
    //调用hashmap的remove方法
    public void delete(Integer id){
        employees.remove(id);
    }
}
